Which equation is true?

1. 5+0=0
2. 15x0=0
3. 1.4+2.7=4.1
4. 2/3 x 5/9 = 7/12

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.

If f(x)=3 over x+2 - square root x-3 then f(7)=

Aday's production of 850 parts contains 50 defective parts. two parts are selected at random without r replacement. let the random variable x equal the number of defective parts in the sample. find the cumulative distribution function of x.